Oil prices slip as OPEC, IEA data underscores crude glut

By Sabina Zawadzki LONDON (Reuters) - Oil prices slipped on Friday as the market refocused on a persistent supply overhang that is not expected to abate unless OPEC and other producers cut their output significantly. U.S. West Texas Intermediate (WTI) futures were down by 84 cents, or almost 2 percent, at $43.82 per barrel. While investors were always sceptical that a deal to cut or freeze oil output levels could be reached at an OPEC meeting on Nov. 30 and then implemented, an increasing amount